// Mgmt
// Copyright (C) James Shubin and the project contributors
// Written by James Shubin <james@shubin.ca> and the project contributors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//
// Additional permission under GNU GPL version 3 section 7
//
// If you modify this program, or any covered work, by linking or combining it
// with embedded mcl code and modules (and that the embedded mcl code and
// modules which link with this program, contain a copy of their source code in
// the authoritative form) containing parts covered by the terms of any other
// license, the licensors of this program grant you additional permission to
// convey the resulting work. Furthermore, the licensors of this program grant
// the original author, James Shubin, additional permission to update this
// additional permission if he deems it necessary to achieve the goals of this
// additional permission.

// Package gettext is the utility code for translation and internationalization.
// We don't want to export any symbols other than the absolute minimum, because
// importing this efficiently to reduce the size of the function calls clutters
// up the namespace which we don't want. This also wraps up the gettext library
// we use so that if we ever change it, we won't need to port over all our code.
package gettext

import (
	"io/fs"
	"os"

	"github.com/purpleidea/mgmt/data"

	"github.com/leonelquinteros/gotext"
)

var (
	locale *gotext.Locale
)

func init() {
	// TODO: should there be other ways of getting the language?
	lang := os.Getenv("LANG")
	if lang == "" {
		lang = "en_CA" // default
	}

	// This function is expecting a locales/ subdirectory.
	localesDir, err := fs.Sub(data.LocalesFS, "locales")
	if err != nil {
		panic(err)
	}
	locale = gotext.NewLocaleFS(lang, localesDir)

	locale.AddDomain("default") // the name of the .po file
}

// G is the main translation function to be exported by this package.
// TODO: should this be L or something else instead?
func G(msgid string, v ...interface{}) string {
	return locale.Get(msgid, v...)
}
